<template>
	<view>
		<view class="goods-list">
		  <view v-for="(item, i) in goodsList" :key="i" @click="gotoDetail(item)">
		    <!-- 为 my-goods 组件动态绑定 goods 属性的值 -->
		    <my-goods :goods="item"></my-goods>
		  </view>
		</view>
	</view>
</template>

<script>
	export default {
		data() {
			return {
				// 商品列表的数据
				goodsList: [],
				// 总数量，用来实现分页
				total: 0,
				queryObj: {
					query: '',
					cid: '',
					pagenum: 1,
					pagesize: 10
				},
				isloading: false
			}
		},
		onLoad(options) {
			// 调用获取商品列表数据的方法
			this.getGoodsList()
			this.queryObj.query = options.query || ''
			this.queryObj.cid = options.cid || ''
		},
		methods: {
			// 获取商品列表数据的方法
			async getGoodsList(cb) {
				// 发起请求
				this.isloading = true
				const {
					data: res
				} = await uni.$http.get('/api/public/v1/goods/search', this.queryObj)
				this.isloading = false
				cb && cb()
				if (res.meta.status !== 200) return uni.$showMsg()
				// 为数据赋值
				this.goodsList = [...this.goodsList, ...res.message.goods]
				this.total = res.message.total
			},
			gotoDetail(item) {
			  uni.navigateTo({
			    url: '/subpkg/goods_detail/goods_detail?goods_id=' + item.goods_id
			  })
			}
		},
		onReachBottom() {
			if (this.queryObj.pagenum * this.queryObj.pagesize >= this.total) return uni.$showMsg('数据加载完毕！')
			if (this.isloading) return
			// 让页码值自增 +1
			this.queryObj.pagenum += 1
			// 重新获取列表数据
			this.getGoodsList()
		},
		// 下拉刷新的事件
		onPullDownRefresh() {
		  // 1. 重置关键数据
		  this.queryObj.pagenum = 1
		  this.total = 0
		  this.isloading = false
		  this.goodsList = []
		
		  // 2. 重新发起请求
		  this.getGoodsList(() => uni.stopPullDownRefresh())
		}

	}
</script>

<style lang="scss">

</style>